Lucy
Digital Quantum Computer
The most powerful universal photonic quantum computer available in Europe.
Deployed in October 2025
EuroQCS-France “Lucy”
Quandela in consortium with attocube systems AG have been selected by EuroHPC Joint Undertaking and EuroQCS-France to deliver a universal photonic quantum computer, with at least 12 qubits, the most powerful in Europe.
The system, called Lucy, owned by EuroHPC and co-acquired by GENCI, will be hosted and operated by CEA at TGCC.
It will be coupled to the Joliot-Curie supercomputer, and will be made available to scientific communities in 2025 as part of open research.
12
Data Qubits (# Coupler Qubits)
Coherence time
Infinite (no decoherence)
Technical Specifications
Product Line / QPU
MOSAIQ-12
Technology
Digital Quantum Computer
Modality
Photonic
Topology
All-to-all connectivity
#modes
24
QOPS
576
Photonic chip design
Universal
System Software
MosaiqOS
Cooling system
Air-cooled
Programming environment(s) (Client software)
Perceval, Qiskit, myQLM, Quandela Quantum Toolbox SDK
(
99.6
± 0.1)%
1-qubit gate fidelity
(
99.0
± 0.8)%
2-qubit gate fidelity
99
%
Read-out fidelity
6
fully entangled qubits
Entanglement capability
4.8
kW
Power consumption (in main system)
